Uber protest

Uber protest

David Ramos / Getty Images

Taxi drivers protest against a new smart phones app 'Uber' during a 24 hours strike on July 1, 2014 in Barcelona, Spain. Taxi drivers in main cities strike over unlicensed car-hailing services. Drivers say that is a lack of regulation behind the new app.

Taxi drivers protest against a new smart phones app 'Uber' during a 24 hours strike on July 1, 2014 in Barcelona, Spain. Taxi drivers in main cities strike over unlicensed car-hailing services. Drivers say that is a lack of regulation behind the new app. (David Ramos / Getty Images)

Taxi drivers protest against a new smart phones app 'Uber' during a 24 hours strike on July 1, 2014 in Barcelona, Spain. Taxi drivers in main cities strike over unlicensed car-hailing services. Drivers say that is a lack of regulation behind the new app.